文档介绍：第 28 卷第 9 .9
2011 年 9 月 Vol .2011No
Application Research puters Sep
一种基于 SVD 的 LTE 系统信道估计算法倡
李小文, 宋海贝, 肖垒
(重庆邮电大学移动通信技术重点实验室, 重庆 400065)
摘要: 针对长期演进系统中采用块状导频的上行物理信道,提出了一种基于奇异值分解的频域插值算法。与
传统的插值算法相比,该算法利用上行物理信道的信道矩阵在时域与频域的变换关系,通过矩阵运算理论推导
出导频符号对数据符号的插值实现公式,适用于上行各种导频分布样式。仿真结果表明,该算法在不增加实现
复杂度的情况下,可以保证优良的信道估计性能,能够在芯片 320 6455 中得到高效实现,可以作为唱
TMS C TD LTE
综合测试仪的一种上行信道估计的插值备选方案。
关键词: 长期演进; 上行物理信道; 信道估计; 插值; 奇异值分解
中图分类号: ; 301畅6 文献标志码: 文章编号: 1001唱3695(2011)09唱3467唱03
TN TP A
: /. .
doi j issn
Channel estimation algorithm based on
singular value position in LTE system
唱, 唱,
LI Xiao wen SONG Hai bei XIAO Lei
( Chongqing Key Laboratory of munications, Chongqing University of Posts munications, Chongqing 400065, China)
&
Abstract: ( ) 唱
This paper proposed a novel interpolation( approach) based. on singular value position ,SVD for uplink chan唱
nel exploiting block type pilot in long term evolution LTE system Unlike the conventional algorithm,the proposed interpola
tion approach exploited the relationship of channel matrix between time domain and, frequency domain developed the practical
formula that. pilots interpolated to data symbols through matrix calculating theory it could be used, for all kinds of uplink pilot
distribution The simulation, results demonstrate that in the condition320 of645